268 



PHYSIOGRAPHY. 



White Antimony. 



Secondary form. 



Fig. 470. 



M 



h on a - 144 44' 



Cleavage, parallel to M highly perfect, and easily ob- 

 tained. Fracture not observable. Surface, M very even, 

 though sometimes a little rough ; h smooth and even $ a 

 and o curved. 



Lustre adamantine, particularly upon the curved faces ; 

 upon A, often pearly lustre. Color while, prevalent ; pass- 

 ing into peach-blossom-red and ash-grey. Streak white. 

 Semi-transparent . . . translucent. 



Sectile. Hardness = 2-5 . . .3-0. Sp. gr. = 5'566, the 

 simple crystals from Braunsdorf. 



Compound Varieties. Crystals, compressed between 

 h and A, are joined parallel to this face. If the individuals 

 be very thin, the common varieties of this species are form- 

 ed, which were formerly considered as simple forms, and 

 the faces of composition as faces of cleavage. Massive : 

 composition granular, lamellar, columnar ; faces of compo- 

 sition of the granular individuals, in general, irregularly 

 streaked. 



1. It melts in the flame of the candle. Before the blow-pipe upon 

 charcoal, it is entirely volatilized, and produces a white coating upon the 



